Logging-truck



(NoModeL) J. M. FRINK 8. J. READMAN. LOGGING TRUCK. No. 453,557.Patented June 2, 1891.

n SM m M w H WW W 6 MM wm j M fifa {a M i fwd W I a j x 1.. W, m WT.H,.@.MMWM.F m M \\\\W\\ l m I 5 6 WITNESSES:

UNITED STATES PATENT OFFICE.

JOHN M. FRINK AND JAMES READHAN, OF SEATTLE, VASl-IINGTON.

LOGGING-TRUCK.

SPECIFICATION forming part of Letters Patent No. 453.557, dated June 2,1891.

Application filed February 6, 1891-' Serial No. 380,427. (No model.)

T0 (0% whom it may concern:

Be it known that we, JOHN M. FRINK and JAMES READMAN,citiZeI1S of theUnited States, and residents of Seattle, in the county of King and Stateof lVa-shington, have invented certain new and useful Improvements inLogging-Trucks; and we do declare the following to be a full, clear, andexact description of the invention, such as will enable others skilledin the art to which it appertains to make and use the same, referencebeing had to the accompanying drawings, and to letters of referencemarked thereon, which form a part of this specification.

Figure 1 of the drawings is an end view partly in section. Fig. 2 is aside detail view, and Fig. 3 is a sectional detail view.

The invention has relation to certain improvements in loggingtrucks; andit consists in the novel construction and arrangement of parts, ashereinafter described.

In the accompanying drawings, illustrating the invention,the letter Arepresents the frame of the truck, suitably mounted, as shown.

B is the bolster, which consists of an iron or steel I-beam mounted uponthe truck and carrying near each end a chock-block C. At its centralportion the bolster is provided on its under surface with the fiat orconvex bearing-plate D, which is also of iron or steel and works on aconcave plate E, secured to the frame. Near each end, intermediately ofthe center bearing-plate and the chock-block, is a side bearing F, whichworks on plates G, secured to the side pieces of the frame.

Ve are aware that the form of chock-block shown in the drawings has beenpatented to \V. H. Garlock, No. 424,287, dated March 25, 1890, and donot therefore make any claim thereto; but,

Having thus described our invention, what we claim as new, and desire tosecure by Letters Patent, is-- lhe logging-truck having its bolsterconsisting of a metal I-bealn having a chockblock on either end andprovided on its under central portion with a flat or convexbearing-plateD and near each end, intermediately of the chock-block andsaid center plate, with a bearing-plate F, in combination with theconcave plate E, secured to the frame, and the plates G, secured to theside pieces of the frame, substantially as specified.

In testimony whereof we affix our signatures in presence of twoWitnesses.

JOHN M. FRINK. JAMES READMAN. Witnesses:

GRACE HOUSE, HORACE DUNCAN.

